KCB Gear Oil Pump

Introduction: The KCB type gear pump is mainly composed of gears, shafts, pump bodies, safety valves, and shaft end seals. The gears, after heat treatment, possess high hardness and strength, and rotate together with the shafts inside replaceable shaft sleeves. The lubrication of all components inside the pump is automatically achieved during operation using the output medium.

Purpose

The KCB type gear pump is suitable for transferring lubricating oils or other liquids with similar properties that are free of solid particles and fibers, non-corrosive, and with temperatures not exceeding 80°C, and viscosities ranging from 5×10-6 to 1.5×10-3 m2/s (5-1500 cSt).

Structural characteristics

This series of gear pumps is primarily composed of gears, shafts, pump bodies, safety valves, and shaft end seals. The gears are heat treated for high hardness and strength and run together with the shaft inside replaceable shaft sleeves. All parts within the pump are lubricated automatically during operation using the output medium. The pump features well-designed oil discharge and return channels, which result in less torque force on the gears during operation, thus reducing bearing load and wear, and enhancing pump efficiency.

Pumps are equipped with safety valves for overload protection. The full回流 pressure of the safety valve is 1.5 times the pump's rated discharge pressure and can also be adjusted additionally within the allowable discharge pressure range according to actual needs. However, note that this safety valve is not suitable for long-term operation as a pressure-reducing valve and should be installed separately on the pipeline if needed. Viewing from the outer end of the main shaft towards the pump, the rotation is clockwise. The performance parameters of various gear pumps are determined at a medium viscosity of 4×10^-3 m^2/s (40 cSt). The parameter values provided in the performance parameters table are applicable within a medium viscosity range of 1×10^-5 to 8×10^-5 m^2/s (10 to 80 cSt). For viscosity outside this range, the performance parameters will be determined separately based on the user's requirements. The discharge pressure values provided for various gear pumps represent the maximum working pressure. Within this range, the pump operates normally, with the working range shown in Figure 1. The KCB series gear oil pumps are composed of components such as the pump body, front and rear pump covers, gears, main and driven shafts, bearings, safety valves, and shaft end seals. The KCB18.3-83.3 main drive gears consist of a pair of helical cylindrical gears with a direct-acting safety valve. The KCB200-960 main drive gears are a human-shaped gear set composed of four helical gears with a differential pressure safety valve. The full series of gear oil pumps are assembled with a three-jaw elastic coupling with an electric motor to form a hot oil pump unit. This series of gear oil pumps has a simple and compact structure, is easy to use and maintain, operates smoothly, and is safe and reliable to use.

Application Range

This type of gear oil pump is suitable for conveying heavy oils, diesel, mechanical oils, vegetable oils, and other liquids with similar properties, which have a medium viscosity not exceeding 150 mm²/s, a temperature not exceeding 120°C, and are non-corrosive, free of hard particle impurities and fibers.

This type of gear oil pump is primarily used for the transfer, pressure boosting, and fuel injection of oil-based media in industries such as petroleum, chemical, metallurgy, mining, and power stations. It is also suitable for circulating light oil in large-scale machinery and equipment, and can serve as a lubrication pump in various types of machinery.

In oil transportation systems, it can serve as a transmission and booster pump; in fuel systems, it can be used as a pump for conveying, pressurizing, and injecting fuel; and in all industrial fields, it can be used as a lubricating oil pump.